For all of you who own websites and want to publish email addresses openly, there is a small and free java scri_pt code that you can use. More information at www.spamspan.com.

I use a different Java encoder that changes the address to Hex & Decimal code. Here's a few examples: http://perso.crans.org/~raffo/aem/index.php
http://www.zapyon.de/spam-me-not/

The benefit of SpamSpan is that if a user does not have JS enabled, then he or she is still able to see the email address. When most (if not all) JS based obfuscators rely on JS support.